Some invariant properties of IgE-mediated basophil activation and desensitization

Journal Article · Mon Oct 01 04:00:00 EDT 1979 · J. Immunol.; (United States)

OSTI ID:5277507

Goldstein, B; Dembo, M; Sobotka, A K; Lichtenstein, L M

We investigate certain general properties of antigen induced degranulation of sensitized basophils by analyzing two types of experiments: experiments in which we expose basophils to two antigens seuquentially and then determine the fraction of histamine released; and experiments in which we obtain time-dependent release and desensitization curves. To analyze the latter type of experiments we introduce a new way to plot release and desensitization data that depends on the nature of the interactions of histamine-containing units (histamine quanta) with themselves or the cells degranulation apparatus, but not on any specific properties of the antigen. From our analysis we conclude that: (1) a fraction of histamine within a population of basophils is nonreleasable by antigenic stimulation. (2) When a basophil degranulates the initial release of histamine appears to inhibit subsequent release. (3) The rate of histamine release is proportional to the amount of releasable histamine remaining in the cells when the amount remaining is small, as expected if release of histamine granules is a stochastic process. (4) There is no dependence of desensitization on the extracellular calcium concentration.

• Research Organization: Los Alamos Scientific Lab., NM
• OSTI ID: 5277507
• Journal Information: J. Immunol.; (United States), Journal Name: J. Immunol.; (United States) Vol. 123:4; ISSN JOIMA
• Country of Publication: United States
• Language: English

Related Subjects

550200* -- Biochemistry
550300 -- Cytology
59 BASIC BIOLOGICAL SCIENCES
ALKALINE EARTH METALS
AMINES
ANTIGEN-ANTIBODY REACTIONS
ANTIGENS
AZOLES
BASOPHILS
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY FLUIDS
CALCIUM
ELEMENTS
HETEROCYCLIC COMPOUNDS
HISTAMINE
IMIDAZOLES
KINETICS
LEUKOCYTES
MATERIALS
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
REACTION KINETICS
STOCHASTIC PROCESSES
TIME DEPENDENCE